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Frank’s cell phone package costs $15 per month and an additional $0.10 per minute. Josie pays$10 per month and $0.12 per minute. Determine the linear system that could be used to find out when their monthly bills would be the same

Sagot :

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Answer:

y = 15 + 0.10x

y = 10 + 0.12x

Step-by-step explanation:

We'll use variable "x" to represent our minutes.

Frank's payment will always $15 no matter what, so there can't be a variable on it. Same with Josie & the $10.

For every minute, x, Frank pays an additional 10 cents with the $15.

For every minute, x, Josie will pay an additional 12 cents with the $10.

Because both equations equal y, we can set them equal to each other to find what value of x that their phone bills will be equal.

15 + 0.10x = 10 + 0.12x

5 = 0.02x

x = 250 minutes

Hope this helps. :)

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